#include <stdio.h>
#define EOS 0
itoa(n,s) char s[];int n;{
	int i,sign;
	if((sign = n) < 0) n = -n;
	i = 0;
	do {
		s[i++] = n % 10 + '0';
	 }while ((n = n/10) > 0);
	if (sign < 0) s[i++] = '-';
	s[i] = EOS;
	reverse(s);
}
